diff --git a/CHANGELOG.md b/CHANGELOG.md
index 1fb1e80..5c0aed9 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,12 @@ All notable changes to MakeMKV Auto Rip will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [Unreleased]
+
+### Fixed
+
+- **Windows MakeMKV detection** - Detection, validation and the executable the app runs now all use `makemkvcon64.exe`, falling back to `makemkvcon.exe` when the 64-bit executable is not installed
+
 ## [1.0.0] - 2025-08-12
 
 ### Added
diff --git a/src/config/index.js b/src/config/index.js
index 9769fdd..57cf7dd 100644
--- a/src/config/index.js
+++ b/src/config/index.js
@@ -1,5 +1,5 @@
 import { readFileSync } from "fs";
-import { dirname, join, resolve, normalize, sep } from "path";
+import { dirname, resolve, normalize, sep } from "path";
 import { fileURLToPath } from "url";
 import { parse } from "yaml";
 import { FileSystemUtils } from "../utils/filesystem.js";
@@ -168,10 +168,8 @@ export class AppConfig {
     const mkvDir = await this.getMkvDir();
     if (!mkvDir) return null;
 
-    // Handle cross-platform executable names
-    const executableName =
-      process.platform === "win32" ? "makemkvcon64.exe" : "makemkvcon";
-    const executablePath = join(mkvDir, executableName);
+    const executablePath = await FileSystemUtils.findMakeMKVExecutable(mkvDir);
+    if (!executablePath) return null;
 
     // Quote the path if it contains spaces (important for Windows paths)
     return executablePath.includes(" ")
diff --git a/src/utils/filesystem.js b/src/utils/filesystem.js
index a3204a8..b9733d9 100644
--- a/src/utils/filesystem.js
+++ b/src/utils/filesystem.js
@@ -120,17 +120,9 @@ export class FileSystemUtils {
         await access(basePath);
 
         // Check if makemkvcon executable exists in this path
-        const executableName =
-          platform === "win32" ? "makemkvcon.exe" : "makemkvcon";
-        const executablePath = join(basePath, executableName);
-
-        try {
-          await access(executablePath);
+        if (await this.findMakeMKVExecutable(basePath)) {
           Logger.info(`Found MakeMKV installation at: ${basePath}`);
           return basePath;
-        } catch {
-          // Executable not found in this directory, try next
-          continue;
         }
       } catch {
         // Directory doesn't exist, try next
@@ -151,17 +143,30 @@ export class FileSystemUtils {
    */
   static async validateMakeMKVInstallation(mkvDir) {
     if (!mkvDir) return false;
+    return Boolean(await this.findMakeMKVExecutable(mkvDir));
+  }
 
-    try {
-      const platform = os.platform();
-      const executableName =
-        platform === "win32" ? "makemkvcon.exe" : "makemkvcon";
-      const executablePath = join(mkvDir, executableName);
+  /**
+   * Find the makemkvcon executable in a MakeMKV directory.
+   * On Windows, prefers makemkvcon64.exe and falls back to makemkvcon.exe.
+   * @param {string} mkvDir - Path to MakeMKV directory
+   * @returns {Promise<string|null>} - Full executable path or null if not found
+   */
+  static async findMakeMKVExecutable(mkvDir) {
+    const executableNames =
+      os.platform() === "win32"
+        ? ["makemkvcon64.exe", "makemkvcon.exe"]
+        : ["makemkvcon"];
 
-      await access(executablePath);
-      return true;
-    } catch {
-      return false;
+    for (const executableName of executableNames) {
+      const executablePath = join(mkvDir, executableName);
+      try {
+        await access(executablePath);
+        return executablePath;
+      } catch {
+        // Not found, try next name
+      }
     }
+    return null;
   }
 }
diff --git a/tests/unit/config.test.js b/tests/unit/config.test.js
index bd14da1..76b62d6 100644
--- a/tests/unit/config.test.js
+++ b/tests/unit/config.test.js
@@ -3,12 +3,19 @@
  */
 
 import { describe, it, expect, beforeEach, vi, afterEach } from "vitest";
+import { join } from "path";
 
 // Partially mock FileSystemUtils for detection/validation only
 const mockFileSystemUtils = {
   detectMakeMKVInstallation: vi.fn().mockResolvedValue("/usr/bin"),
   validateMakeMKVInstallation: vi.fn().mockResolvedValue(true),
+  findMakeMKVExecutable: vi.fn(),
 };
+const platformExecutable = async (mkvDir) =>
+  join(
+    mkvDir,
+    process.platform === "win32" ? "makemkvcon64.exe" : "makemkvcon"
+  );
 vi.mock("../../src/utils/filesystem.js", async () => {
   const actual = await vi.importActual("../../src/utils/filesystem.js");
   return {
@@ -33,6 +40,9 @@ describe("AppConfig", () => {
     // Reset mock implementation
     mockFileSystemUtils.detectMakeMKVInstallation.mockResolvedValue("/usr/bin");
     mockFileSystemUtils.validateMakeMKVInstallation.mockResolvedValue(true);
+    mockFileSystemUtils.findMakeMKVExecutable.mockImplementation(
+      platformExecutable
+    );
   });
 
   afterEach(() => {
diff --git a/tests/unit/filesystem.test.js b/tests/unit/filesystem.test.js
index 653ebff..5f032f5 100644
--- a/tests/unit/filesystem.test.js
+++ b/tests/unit/filesystem.test.js
@@ -80,6 +80,9 @@ describe("FileSystemUtils", () => {
       const result = await FileSystemUtils.detectMakeMKVInstallation();
       expect(result).toBe("C:/Program Files/MakeMKV");
       expect(mockedFsPromises.access).toHaveBeenCalled();
+      expect(mockedFsPromises.access).toHaveBeenLastCalledWith(
+        expect.stringMatching(/makemkvcon64\.exe$/)
+      );
     });
 
     it("should detect MakeMKV on Linux", async () => {
@@ -125,7 +128,21 @@ describe("FileSystemUtils", () => {
         "C:/Program Files/MakeMKV"
       );
       expect(result).toBe(true);
-      expect(mockedFsPromises.access).toHaveBeenCalled();
+      expect(mockedFsPromises.access).toHaveBeenCalledWith(
+        expect.stringMatching(/makemkvcon64\.exe$/)
+      );
+    });
+
+    it("should fall back to makemkvcon.exe on Windows", async () => {
+      mockedOs.platform.mockReturnValue("win32");
+      mockedFsPromises.access.mockImplementation(async (path) => {
+        if (path.endsWith("makemkvcon64.exe")) throw new Error("ENOENT");
+      });
+
+      const result = await FileSystemUtils.findMakeMKVExecutable(
+        "C:/Program Files/MakeMKV"
+      );
+      expect(result).toMatch(/[\\/]makemkvcon\.exe$/);
     });
 
     it("should validate Unix installation", async () => {